Social justice is the equal distribution of resources and opportunities, in which outside factors that categorize people (race, gender, orientation, class, religion, etc.) are irrelevant. People have strived to achieve some level of social justice throughout history, with varying degrees of success. Here are some of the topics in which there has historically been a lack of social justice, accompanied by links that give you some historical background.
SLAVERY
Slavery in Ancient Mesopotamia
RACISM
WOMEN'S RIGHTS (or lack thereof)
Role of Women in Ancient Mesopotamia
Role of Women in Ancient Egypt
Role of Women in Ancient China
Role of Women in Ancient India
UNFAIR/BIASED LEGAL SYSTEMS
Social Class and Gender in Hammurabi's Code
Unfair Treatment in Indian Caste System
YOUNG FIGHTERS
Spartan Kids Begin Military Training at 7
POVERTY AND ITS EFFECTS
IMBALANCE OF POWER